Patents by Inventor Du Yeol Ryu

Du Yeol Ryu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Ionomer for Fuel Cell Capable of Self-Assembly and Method of Preparing the Same
    Publication number: 20240178425
    Abstract: An embodiment ionomer for a fuel cell includes a copolymer having no carbon-oxygen bond, wherein the copolymer includes hydrophilic moieties disposed at both ends, wherein each hydrophilic moiety includes a styrene unit and a proton conductive functional group, and a hydrophobic moiety interposed between the hydrophilic moieties, wherein the hydrophobic moiety includes an ethylene-based unit, a butylene-based unit, an isoprene-based unit, or any combination thereof.
    Type: Application
    Filed: April 28, 2023
    Publication date: May 30, 2024
    Inventors: Il Seok Chae, Jong Kil Oh, Jong Hak Kim, Du Yeol Ryu, So Youn Lee
  • BLOCK COPOLYMER FOR LITHOGRAPHY AND LITHOGRAPHY METHOD USING THE SAME
    Publication number: 20230367215
    Abstract: The inventive concept relates to a block copolymer for lithography, capable of self-assembling and self-healing, and more particularly, to a block copolymer including a first block which is a repeating unit of polymerized siloxane and a second block which is a repeating unit of polymerized alkyl azobenzene acrylate. The alkyl is a linear or branched chain of 1 to 10 carbon atoms, the number (x) of the repeating unit of polymerized siloxane is about 60 to about 80, and the number (y) of the repeating unit of polymerized alkyl azobenzene acrylate is about 15 to about 25. The block copolymer has a cylindrical phase.
    Type: Application
    Filed: October 5, 2022
    Publication date: November 16, 2023
    Applicant: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: Du Yeol RYU, Hui Il JEON, Seungbae JEON, Seungyun JO
  • Hybrid porous structured material, membrane including the same, and method of preparing hybrid porous structured material
    Patent number: 9873622
    Abstract: A hybrid porous structured material may include a matrix including a plurality of first pores interconnected in three dimensions, and a porous material including second pores and filling wholly or partially each of the plurality of the first pores.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: January 23, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyo Kang, Sung Soo Han, Pil Jin Yoo, Du-yeol Ryu, Young Hun Kim, Seon Ju Yeo
  • Hybrid porous structured material, membrane including the same, and method of preparing hybrid porous structure material
    Patent number: 8695811
    Abstract: A hybrid porous structured material may include a porous region (that forms a nanopore structure) and a non-porous region. The porous region may form a stacked structure where a plurality of spherical bodies are stacked so as to contact each other in three dimensions. The non-porous region may form a structure that fills a gap between the plurality of spherical bodies of the porous region.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: April 15, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyo Kang, Sung Soo Han, Pil Jin Yoo, Du Yeol Ryu, Young Hun Kim, Seon Ju Yeo
  • HYBRID POROUS STRUCTURED MATERIAL, MEMBRANE INCLUDING THE SAME, AND METHOD OF PREPARING HYBRID POROUS STRUCTURED MATERIAL
    Publication number: 20140048477
    Abstract: A hybrid porous structured material may include a matrix including a plurality of first pores interconnected in three dimensions, and a porous material including second pores and filling wholly or partially each of the plurality of the first pores.
    Type: Application
    Filed: October 23, 2013
    Publication date: February 20, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Hyo KANG, Sung Soo HAN, Pil Jin YOO, Du-yeol RYU, Young Hun KIM, Seon Ju YEO
  • HYBRID POROUS STRUCTURED MATERIAL, MEMBRANE INCLUDING THE SAME, AND METHOD OF PREPARING HYBRID POROUS STRUCTURE MATERIAL
    Publication number: 20130112613
    Abstract: A hybrid porous structured material may include a porous region (that forms a nanopore structure) and a non-porous region. The porous region may form a stacked structure where a plurality of spherical bodies are stacked so as to contact each other in three dimensions. The non-porous region may form a structure that fills a gap between the plurality of spherical bodies of the porous region.
    Type: Application
    Filed: May 11, 2012
    Publication date: May 9, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyo Kang, Sung Soo Han, Pil Jin Yoo, Du Yeol Ryu, Young Hun Kim, Seon Ju Yeo